User's Manual

Confidential Document

5.4.

GPS

Performance

for

Installation

GPS Performance for Installation

The AX5 determines its position by communicating with the Global Positioning Satellites through internal GPS

antenna. The location chosen of the AX5 will have a lot to do with the overall performance of the GPS receiver.

The AX5 device has internal GPS antenna but it is not a water proof design. Therefore, it shall be interior

installed. Please note that the following interior conditions may cause bad GPS reception of AX5:

z Your vehicle has metallic window tint

z Your vehicle has a windshield mounted radio antenna

z Your vehicle has a solar reflective window

The AX5 installation direction shall be considered as well. Please see the following figure:

Sky

GPS Antenna

Good for GPS reception

DLC Connector

Acceptable

Bad for GPS reception

The AX5 used the latest GPS autonomous technology which accelerates GPS positioning by capitalizing on

the periodic nature of GPS satellite orbits. GPS orbit predictions are directly calculated by the GPS receiver

and no external aiding data or connectivity is required. Therefore, more satellites received are benefit for GPS

fix under low signal environment for the next 3~4 days.